Desorption of cluster ions from adsorbed methane under cryogenic condition by low-energy ion irradiation

Narita, Ayumi; Honda, Mitsunori; Hirao, Naohisa; Baba, Yuji; Yaita, Tsuyoshi

doi:10.1016/j.apsusc.2008.05.217

Cited by 4 publications

(3 citation statements)

References 22 publications

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“…518 In the case of solid methane, cluster ions C n H x + up to n = 20 are desorbed by low-energy He + ion bombardment. 522 MD simulation and experimental results on the nature of the neutrals ejected; solid C 6 H 6 surfaces using atomic projectiles Ar + and H 2 + suggest that more than one mechanism operates. 523−525 At submonolayer coverages of benzene molecules deposited on Ag{111} surfaces, the kinetic energy of the ejected neutrals usually ranges from 0.25 to 1.00 eV, and these are ejected as a consequence of collisions with substrate particles.…”

Section: Sims Analysis Of Condensed Molecularmentioning

confidence: 97%

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Low-Energy Ionic Collisions at Molecular Solids

et al. 2012

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Figure 2. Ion/surface collision spectrum recorded after collision of 30 eV benzene molecular ions at an H-SAM surface. The ion at m/z 91 corresponds to the addition of a methyl group followed by loss of H 2 and that at m/z 65 to further loss of C 2 H 2 . The peak at m/z 79 is due to a H atom abstraction reaction. The inset shows the collision process and some reaction products. Reprinted from ref 72.

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Section: Sims Analysis Of Condensed Molecularmentioning

confidence: 97%

“…This suggests a suppression effect, with the biomolecules taking up some of the available protons that form (H 2 O)H + in the pure water ice . In the case of solid methane, cluster ions C n H x + up to n = 20 are desorbed by low-energy He + ion bombardment …”

Section: Sims Analysis Of Condensed Molecular Solidsmentioning

confidence: 99%

Low-Energy Ionic Collisions at Molecular Solids

et al. 2012

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“…They inferred that these large cluster ions are formed and desorbed during the gas flow process [7]. Baba and coworkers [20,21] studied cluster ion desorption from condensed CH 4 and N 2 solids by He + ion impact. When solid targets are stimulated by light ions, the projectile energy is significantly consumed by inelastic collisions, resulting in electronic excitations of the target atoms.…”

Section: Introductionmentioning

confidence: 99%

Desorption of cluster ions from solid Ne by low-energy ion impact

Tachibana¹,

Fukai²,

Koizumi³

et al. 2010

J. Phys.: Condens. Matter

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Abstract. We investigated Ne+ ions and Ne + n (n = 2 − 20) cluster ions desorbed from the surface of solid Ne by 1.0 keV Ar + ion impact. Kinetic energy analysis shows a considerably narrower energy distribution for the Ne + n (n ≥ 3) ions than for the Ne + n (n = 1, 2) ions. The dependence of ion yields on Ne film thickness indicates that cluster ions (n ≥ 3) are desorbed only from relatively thick films. We conclude that desorbed ions grow into large cluster ions during the outflow of deep bulk atoms to the vacuum.

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